Liquid-fuel burner.



No. 698,408. Patented Apr. 22, l902.

J. W. NEUMANN. v LIQUID FUEL-BURNER.

V (Applicatiun filed Och-12, 1901.)

(No Model.)

(73km Zdeflmzzzz Rrnmus wzreas mu Pnm'n-Lrmm, WASHINGTON, n4 0- UNITEDSTATES JOHN W'. NEUMANN, OF LOUISVILLE,

PATENT OFFICE.

KENTUCKY, ASSIGNOR OF ONE-HALF LIQUID-PU EL BURNER.

SPECIFICATION forming part of Letters Patent N 0. 698,408, dated April22, 1902.

Application filed October 12, 1901. Serial No. 78,515. (No model.)

T0 at whom it may concern:

Be it known that 1, JOHN W. NEUMANN, a citizen of the United States,residing at Louisville, in the county of Jefferson and State ofKentucky, have invented new and useful Improvements in Liquid-FuelBurners, of which the following isa specification.

This invention relates to liquid-fuel burners, and especially to thatclass of burners adapted to be set in the fire-boxes of cooking andother stoves; but it will be evident to those skilled in the art thatthe burner may be employed in connection with stoves and furnaces ofvarious dilferent kinds.

The invention has for its object to provide an exceedingly simple,economical, and ellicient burner for burning petroleum and similarhydrocarbon oils in which the flames and gas will be given a rotarywhirling motion before being broughtinto direct contact with theatmospheric air fed to the burner, whereby the gases will be thoroughlyheated before commingling with the air, and thus insure completecombustion with practically little or no ing the oil thereto; audit hasfor its further object to improve and simplify the structure andincrease the efficiency generally of this class of burners.

To these ends my invention consists in the features and in theconstruction,combination, and arrangement of parts hereinafterdescribed, and particularly pointed out in'the claims following thedescription, reference being had to the accompanying drawings, forming apart of this specification, wherein- Figure 1 is a perspective viewshowing my improved burner applied to a cooking-stove, only a portion ofthe stove being illustrated. Fig. 2 is a transverse vertical sectionalview thereof, and Fig. 3 is a perspective View of the blower or damperfor regulating the admission of air to the burner.

In the drawings 1 have shown by way of example the burner applied to acookingstove, the numeral 1 indicating the top of the stove, 2 the frontthereof, 3 the oven, 4 the firebox, and 5 the flue extending from thefire-box over the top of the oven to the offtake-tlue, chimuey,orstovepipe, all constructed in a usual and well known manner. Formed inthe front wall 2 of the stove is a rectangular aperture 6, which servesfor the admission of atmospheric air to the burner. Disposed in thefire-box 4 is a burner-tray consisting of a metallic casing havingatroughshaped body portion 7, approximately semicylindrical incross-section, and an overhanging hood 8, that extends vertically upwardfrom the rear side of the body portion 7 and is thence curved over saidbody portion and downward to a point 11 above and in front of theforward edge 9 of the body portion of the tray. From thence the hood isextended vertically to form a flange 10, that is fitted against thefront 2 of the stove above the aperture 6. As shown, the upper forwardedge 11 of the burner-tray is disposed above and in the same verticalplane with the lower edge 12 of the aperture 6, formed in the front wallof the stove. Arranged in the fire-box beneath the burner-tray is ashield 13, consisting of a metallic plate, trough-shaped incross-section, which extends underneath and in rear of the burner-trayand at its upper rear end is provided with a horizontal flange 14, whichextends over and rests on the top of the oven 3. The front portion ofsaid shield extends upwardly through the aperture 6;and rests againstthe lower edge 12 thereof, the upper front edge of the shield preferablyterminating in a horizontal flange 15, which forms a seat for the damperor blower presently to be described.

Leading from any suitable oil-reservoir, preferably consisting of a tank(not shown) supported back of the stove, is an oil-feed pipe 16, thatextends across and in front of the stove and thence downward into thefirebox and at its lower end is provided with a T 17, that is suspendedhorizontally within the body portion 7 of the burner-tray and above itsbottom, the opposite ends of said T being open, as shown.

As before stated, air is admitted to the burner through the aperture 6,formed in the front wall of the stove, and the quantity admitted to theburner is regulated by a damper or blower consisting of a flat metallicplate 18, provided on its inner side and near its lower edge with ahook-shaped flange 19, that is adapted to rest on and hook over theflange 15 of the shield 13. Riveted or otherwise suitably attachedcentrally to the plate 18 is a handle 19, consisting of a curvedmetallic strap, the lower end of which when the damper is in positionrests against the front 2 of the stove and aids in holding the damper inplace.

The operation of the burner will be readily understood. Oil is conductedby the pipe 16 to the T 17 and drips from the opposite ends of thelatter into the burner-tray. The oil in the tray being ignited, theflames and hot gases ascend and are deflected forward and downward bythe arched or concaved hood 8, as indicated by the arrows in Fig. 2 ofthe drawings, and when they reach the front edge 11 of the burner-traythey meet and commingle with the inwardly-induced current of air. Theheated gas being thus supplied with oxygen is ignited and consumed, theflamesand products of combustion then passing around and down beneaththe burner-tray and thence up in rear of the latter and off through theflue 5. Owing to the arched overhanging hood 8 ofthe burner-tray theflames and gas are given a rotary whirling movement, whereby the gasbecomes highlyheated before meetingincoming currents of atmospheric air,so that when the gas is mixed with the air it is in the best conditionto insure perfect combustion. The flames and products of combustion inpassing underneath and up behind the burnertray heat the latter andcause the oil to be instantly vaporized on striking the tray. Thisresult is promoted by the flames enveloping the T 17 and the lower endof the oilfeed pipe, whereby the oil is highly heated and is in a stateto be easily volatilized as it drips from the end of the T. In practicea regulating-Valve Will be provided for the oilsupply pipe, as usual. Asbefore stated, air is admitted to the burner through the aperture 6, andnormally said aperture will supply sufficient air to maintain a highheat in the fire-box of the stove. If, however, only a moderate heat isdesired, the blower or damper 18 is then fitted in place, as shown inFig. 2 of the drawings, thereby reducing the area of the air-inletopening, and consequently diminishing the volume of air supplied to theburner. Hence the combustion will be slower and the generated heat less.The admission of air may be still further regulated and controlled bysliding the damper or blower endwise across the aperture.

Having now described my invention, what I claim is 1. In a liquid-fuelburner, the combination with a substantially trough-shaped fuel-trayhaving an arched and symmetrically-curved overhanging hood, of a shieldarranged underneath and in front and rear of the said tray, and a dampercomprising a flat plate having an inner flange adapted to rest on thefront edge of said shield and support the damper, said damper beingarranged to partially close the aperture between the shield and hood,substantially as described.

2. In a liquid-fuel burner, the combination with a combined fuel-trayand hood consisting of a scroll-shaped integral casting comprising alower portion, substantially semicircular in shape in cross-section andconstituting a fuel-tray and an upper portion comprising an arched andsymmetrically-curved hood, the free end of which extends above and infront of the free edge of the tray, of means for feeding liquid fuel tosaid tray, substantially as described.

3. In a liquid-fuel burner, the combination with a combined tray andhood consisting of an integral casting, scroll-shaped in cross-sectionand having a lower portion, substantially cylindrical in cross-sectionand constituting a fuel-tray and an upper portion comprising anoverhanging arched and symmetricallycurved hood, the free end of whichterminates at a point in front of and above the free edge of the trayand provided with a vertically-extending portion, substantially asdescribed JOHN W. NEUMANN.

\Vitnesses:

D. L. BEDINGER, JOHN P. LACKSTEDER.

